/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.explorer.ui.form;

import com.vaadin.ui.Component.Event;
import com.vaadin.ui.Component.Listener;
import org.activiti.explorer.ui.form.FormPropertiesForm.FormPropertiesEvent;


/**
 * Listener that only handles {@link FormPropertiesEvent}. The handling
 * of the event is delegated on to handleFormSubmit and handleFormCancel methods
 *
 * @author Frederik Heremans
 * @see FormPropertiesForm
 */
public abstract class FormPropertiesEventListener implements Listener {

    private static final long serialVersionUID = 7560512657831865244L;

    public final void componentEvent(Event event) {
        if (event instanceof FormPropertiesEvent) {
            FormPropertiesEvent propertyEvent = (FormPropertiesEvent) event;
            if (FormPropertiesEvent.TYPE_SUBMIT.equals(propertyEvent.getType())) {
                handleFormSubmit(propertyEvent);
            } else {
                handleFormCancel(propertyEvent);
            }
        }
    }

    protected abstract void handleFormSubmit(FormPropertiesEvent event);

    protected abstract void handleFormCancel(FormPropertiesEvent event);
}
